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This method was previously unused, but with the network service moving
out of process, the speech recognition code will now need to use it.

No idea if we use speech recognition on headless (Though it does seem
unlikely), so this may not be needed?

Bug: 841445
Change-Id: I2c75a53663f46ddfbbd14aeac4ab3d6686d7d6e0
Reviewed-on: https://chromium-review.googlesource.com/1145711Reviewed-by: Andrey Kosyakov <caseq@chromium.org>
Commit-Queue: Matt Menke <mmenke@chromium.org>
Cr-Commit-Position: refs/heads/master@{#578128}